How do I convert JSON to YAML?

Paste your JSON data into the input box or click "Upload JSON" to pick a .json file. The tool automatically formats it into clean, idiomatic YAML with proper indentation.

Can I generate multi-document YAML with "---" separators?

Yes. Check the "Multi-document" option. If your JSON root is an array of objects (such as multiple Kubernetes resources like Services and Deployments), each object will be output as an independent YAML document separated by "---".

Can I control indentation and string quotation styles?

Yes. You can switch between 2-space and 4-space indentation, and choose whether strings are unquoted, single-quoted, or double-quoted.

Yes. All parsing and conversion are executed entirely client-side in your browser using modern Web APIs. No configuration files, credentials, or secrets are ever uploaded to a server.

JSON to YAML

Convert JSON data and configurations into clean, formatted YAML. Perfect for Kubernetes manifests and Docker Compose.

Indentation

String Quotes

Multi-document (--- per array item)

Switch to YAML to JSON

Input JSON1,192 characters

{
  "apiVersion": "apps/v1",
  "kind": "Deployment",
  "metadata": {
    "name": "production-api",
    "labels": {
      "app": "gateway",
      "tier": "backend",
      "environment": "production"
    }
  },
  "spec": {
    "replicas": 3,
    "selector": {
      "matchLabels": {
        "app": "gateway"
      }
    },
    "template": {
      "metadata": {
        "labels": {
          "app": "gateway"
        }
      },
      "spec": {
        "containers": [
          {
            "name": "server",
            "image": "node:20-alpine",
            "ports": [
              {
                "containerPort": 3000
              }
            ],
            "env": [
              {
                "name": "NODE_ENV",
                "value": "production"
              },
              {
                "name": "PORT",
                "value": "3000"
              }
            ],
            "resources": {
              "limits": {
                "memory": "512Mi",
                "cpu": "500m"
              },
              "requests": {
                "memory": "256Mi",
                "cpu": "250m"
              }
            }
          }
        ]
      }
    }
  }
}

Output YAML

1 doc

Ready

apiVersion: apps/v1
kind: Deployment
metadata:
  name: production-api
  labels:
    app: gateway
    tier: backend
    environment: production
spec:
  replicas: 3
  selector:
    matchLabels:
      app: gateway
  template:
    metadata:
      labels:
        app: gateway
    spec:
      containers:
        - name: server
          image: node:20-alpine
          ports:
            - containerPort: 3000
          env:
            - name: NODE_ENV
              value: production
            - name: PORT
              value: "3000"
          resources:
            limits:
              memory: 512Mi
              cpu: 500m
            requests:
              memory: 256Mi
              cpu: 250m

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Clean JSON to YAML Conversion for DevOps & Developers

YAML is the standard configuration format for modern infrastructure, including Kubernetes manifests, Docker Compose, GitHub Actions, Helm charts, and Ansible playbooks. The JSON to YAML Converter makes it easy to take JSON payloads from REST APIs and convert them into clean, human-readable YAML configurations.

Key Capabilities

Idiomatic YAML Formatting

Emits standard YAML 1.2 syntax without unnecessary quotes, preserving comments and data types accurately.

Kubernetes Multi-Doc Support

Easily split JSON arrays of resources into multi-document YAML separated by standard --- document boundaries.

Flexible Indentation

Customizable 2-space or 4-space indentation with line-wrapping disabled so long strings and URLs remain clean.

Total Browser Privacy

Config files often contain sensitive hostnames, tokens, and environment parameters. Everything runs client-side with zero network calls.

Related Data & Config Tools

Frequently Asked Questions

How do I convert JSON to YAML?: Paste your JSON data into the input box or click "Upload JSON" to pick a .json file. The tool automatically formats it into clean, idiomatic YAML with proper indentation.
Can I generate multi-document YAML with "---" separators?: Yes. Check the "Multi-document" option. If your JSON root is an array of objects (such as multiple Kubernetes resources like Services and Deployments), each object will be output as an independent YAML document separated by "---".
Can I control indentation and string quotation styles?: Yes. You can switch between 2-space and 4-space indentation, and choose whether strings are unquoted, single-quoted, or double-quoted.
Is my data secure?: Yes. All parsing and conversion are executed entirely client-side in your browser using modern Web APIs. No configuration files, credentials, or secrets are ever uploaded to a server.